I’m starting this post to structure some thoughts.
Disintegration: we can make each component of a framework device a separately usable device, the opposite of assembling a laptop to a tightly integrated device. With the mainboard and the cooler master case this was already done. For the webcam, touchpad, speakers, microphone, keyboard, screen, battery, m.2 ssd, … it might already exist (ssd) or already been done/prototyped by someone.
Cards: there is probably a table of existing commercial, prototyped and proposed cards already, if not that could be fun.
Any sufficiently small existing usb device could be turned into a card, the question might be: but why? (fun is one answer)
IR card for ((apple)tv) remotes and collapsing rj45 cards are first thoughts. I wonder if specific communities e.g. car mechanics, medical personnel, … have a killer card wish or requirement.
Replacing the mainboard with the one of a different device, like an SBC, smartphone or laptop could prototype a framework running any of apple OSs and many more platforms in a framework shell.
What about touchscreens, how hard could that be? /s
The mainboard could of course be used to bring back to life non functional devices like trains, cars or tractors but I don’t have the opportunity yet to make any one of those work better.
Some could be silly but make for good content (which could be fun or a distraction or give ppl false hopes).